# 公用的自定义工具类
import functools

from flask import session, current_app, g

from info.models import User


def do_index_class(index):
    """返回指定索引对应的类名"""
    if index == 1:
        return 'first'
    elif index == 2:
        return "second"
    elif index == 3:
        return "third"
    else:
        return ""

def do_sex(gender):
    if gender == 'MAN':
        return True
    else:
        return False


def user_login_data(f):
    @functools.wraps(f)
    def wrapper(*args,**kwargs):
        user_id = session.get('user_id')
        user = None
        if user_id:
            try:
                user = User.query.get(user_id)
            except Exception as e:
                current_app.log.error(e)
        g.user = user
        return f(*args,**kwargs)
    return wrapper